Question 3: (4 marks: 1 mark for the variable costs, 1 mark for the fixed costs, 2 marks for the equation). Maintenance costs at a Sigma Corporation factory are listed below: March April May... June... July .... August .... September. October November Machine-Hours Maintenance Cost 3,627 $54,384 3,588 $53,980 3,637 $54,453 3,638 $54,491 3,572 $53,843 3,611 $54,196 3,644 $54,550 3,609 $54,181 3,669 $54,767 Required: Management believes that maintenance cost is a mixed cost that depends on machine- hours. What is the total cost formula.? Maintenance costs at a Sigma Corporation factory are listed below: March April May. June... July ... Machine-Hours Maintenance Cost 3,627 $54,384 3,588 $53,980 3,637 $54,453 3,638 $54,491 3,572 $53,843 3,611 $54,196 3,644 $54,550 $54,181 3,669 $54,767 August .. September. October November 3,609 Required: Management believes that maintenance cost is a mixed cost that depends on machine- hours. What is the total cost formula